Byte Bilgisayar (1986)
Istanbul Home-Computer Retail and Software Enterprise Bridging Arcade Trade and Domestic Publishing
Established in 1986 in Kadıköy's Yazıcıoğlu İş Hanı on Istanbul's Anatolian side under Derya Yalazkan, Byte Bilgisayar operated throughout the late 1980s and early 1990s as a Commodore 64 and Amiga hardware peripheral vendor, cassette-and-diskette distributor, and software localization enterprise. By developing and commercially retailing the Turkish-language parser adventure Keloğlan in 1989, the firm bridged informal microcomputer shop commerce with domestic Turkish game publishing.
Microcomputer Storefront Operations in Kadıköy and Nationwide Mail-Order Reach
Following customs liberalization in Turkey during the mid-1980s and Teleteknik's official distribution of Commodore microcomputers, specialized small enterprises clustered inside multi-story commercial buildings in Istanbul's Kadıköy and Mecidiyeköy districts to supply cassettes, floppy disks, joysticks, fast-load cartridges, and repair services. Founded in 1986 inside Kadıköy's Yazıcıoğlu İş Hanı by Derya Yalazkan, Byte Bilgisayar functioned as one of the earliest structured Commodore 64 and Commodore Amiga software storefronts on Istanbul's Anatolian side. Beyond walk-in counter trade for students and hobbyists, the shop purchased recurring full-page and half-page catalog advertisements in Turkish home-computer magazines—most visibly Safa Tanıtım's monthly 64'ler between 1988 and 1991—allowing microcomputer owners in Anatolian cities without dedicated computer shops to order utility programs, educational software, blank media, and Datasette calibration tools via postal delivery. Storefront technicians also assembled custom joystick microswitches, printer cables, and power supplies adapted to local electrical standards, reinforcing the shop's technical standing among regular Commodore users across Istanbul.
Turkish-Language Software Production and the 1989 Publication of Keloğlan
Whereas the vast majority of computer shops in late-1980s Istanbul confined their software activities to duplicating imported European and North American releases or adding brief introductory crack/loader screens, Byte Bilgisayar invested staff time into original Turkish-language software authoring. Recognizing that English-only text parsers excluded a large segment of younger Commodore 64 users in Turkey from the graphic-adventure genre, Derya Yalazkan, working with Ahmet Ergen and Ilgaz Akbaş, adapted Incentive Software's Graphic Adventure Creator (GAC) to Turkish orthography and verb-noun command syntax to produce Keloğlan in 1989. Marketed with printed cassette inlays and retail pricing alongside imported software listings, Keloğlan demonstrated that an Istanbul computer storefront could finance, package, and distribute an original culturally localized game—establishing an organizational precedent followed between 1992 and 1994 by Commodore Amiga teams such as Digital Dreams Art and Siliconworx before shifting market conditions moved Kadıköy's shops toward IBM PC hardware assembly.